On Thu, Jan 7, 2010 at 5:18 PM, Bulat Ziganshin
<bulat.ziganshin at gmail.com> wrote:
> Hello Bas,
>> Thursday, January 7, 2010, 6:25:34 PM, you wrote:
>>> So now I'm confused... are these standard file handles always open on
>> program startup or are there abnormal situations when they are closed?
>> afaik, parent process may close them before executing your program,
> it's used in particular for running daemons
Thanks Bulat for explaining.
Then I think the standard handles should have a type that at least
encodes that they may be closed as in:
stdin ∷ MonadCatchIO pr
⇒ RegionT s pr (Maybe (RegionalFileHandle R (RegionT s pr)))
where Nothing means that the standard handle is closed.
However this still leaves open problem 1, 2 and 3.
Thanks,
Bas